x=3t²+2t+3 y=(e的y次幂)·sint + 1 ,求在t=0时 dy/dx=?
设x=1+t^2、y=cost 求 dy/dx 和d^2y/dx^2 sint-tcost/4t^3 和 sint-tc
x=2t^2 +1 y= sint 求dy/dx是多少?
设x=t^2+cost,y=1-sint,求dy/dx
x=(e^t)sint y=(e^t)cost 求d^2y/dx^2
如果 x=根号(1-t平方),y=1/sint, 求 dy/dx=
设x=ln(1+t²) y=t-arctant 求dy/dx d²y/dx²
y=1+xe^y,求dy/dx.参数方程x=e^-t,y=3t,求dy/dx.求∫1/x+x².
已知 x = e^t * cos t y = e^t *sin t 求当t= π/3时dy/dx的值
参数方程x=(t-1)e^t,y=1-t^4,求dy/dx
x=2t+cost y=t+e^t 求dy/dx
求微分的题目一道,x=e^(-t)sint,y=e^tcost,求 d^2y/dx^2
设x=3e^-t,y=2e^t,则dy/dx等于多少?